gaze estimation frame not visible without detections

dpetr

hello! i am trying to make a project based off the gen2-gaze-estimation example. i need for the app to still work when there are not any detections inside the frame. currently, the app does not start until it sees at least one person, and when the app has already been started, the frame freezes when it no longer sees any persons (it only displays the last frame where at least one person was being detected). i would rather have a version where the camera feed is being displayed despite there not being any detections. is it possible to do that, and if yes, then how?

jakaskerl

Hi @dpetr
Just add a check to the part where you are using openCV to display the frame. Something like if frame != None.

Thanks,
Jaka

dpetr

hey jakaskerl

im not sure i worded myself correctly. the frame does stay open while the application is running, the only problem is that when all people get out of the frame, the openCV window displays the last frame before all detections left, kinda like this:

the window gets stuck on this frame up until a new detection gets into the frame again. i want to be able to still get the camera feed even when there are no people detected by the camera. on the other hand, when the application is being started but it sees no people, the window does not open up until it can see at least one person.

i have also tried to pull the output node of the camera, before it gets linked to the other nodes in the pipeline, but the window that is being displayed in this case is blank

thank you,
Deni

dpetr

jakaskerl
i have managed to solve this. in my MultiMsgSync.py script, i have simply removed the "if 0 < len(msgs["gaze"]):" line. the application runs like i initially wanted it to now.

thanks for the help!
Deni